* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

.calculator {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.date-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 25px;
}

.input-group {
    flex: 1;
    min-width: 240px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

input[type="date"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    color: #333;
}

.options {
    margin-bottom: 25px;
}

.checkbox-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    resize: vertical;
    margin-top: 10px;
    font-size: 14px;
}

button {
    display: block;
    width: 100%;
    padding: 12px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-bottom: 25px;
}

button:hover {
    background-color: #45a049;
}

.results {
    background-color: #f8f8f8;
    padding: 20px;
    border-radius: 5px;
    border-left: 4px solid #4CAF50;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 16px;
}

.result-item:last-child {
    margin-bottom: 0;
}

.hidden {
    display: none;
}

#holidaysSection {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: 5px;
    margin-top: 15px;
    border: 1px solid #eee;
}

#holidaysSection h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: #666;
    font-weight: normal;
} 